ASCERTAIN Synonyms: 73 Similar and Opposite Words

Q: How does the verb 'ascertain' contrast with its synonyms?

Some common synonyms of ascertain are determine , discover , learn , and unearth . While all these words mean "to find out what one did not previously know," ascertain implies effort to find the facts or the truth proceeding from awareness of ignorance or uncertainty. // attempts to ascertain the population of the region

Q: When is 'determine' a more appropriate choice than 'ascertain'?

The meanings of determine and ascertain largely overlap; however, determine emphasizes the intent to establish the facts definitely or precisely. // unable to determine the origin of the word

Q: When would 'discover' be a good substitute for 'ascertain'?

While in some cases nearly identical to ascertain , discover may apply to something requiring exploration or investigation or to a chance encounter. // discovered the source of the river

Q: In what contexts can 'learn' take the place of 'ascertain'?

The words learn and ascertain can be used in similar contexts, but learn may imply acquiring knowledge with little effort or conscious intention (as by simply being told) or it may imply study and practice. // I learned her name only today // learning Greek

Q: When can 'unearth' be used instead of 'ascertain'?

The words unearth and ascertain are synonyms, but do differ in nuance. Specifically, unearth implies bringing to light something forgotten or hidden. // unearth old records

ascertain

verb

ˌa-sər-ˈtān

Definition of ascertain

as in to discover

to come to an awareness of was immediately able to ascertain that the girl was uncomfortable talking about her life at home

Synonyms & Similar Words

Relevance

Antonyms & Near Antonyms

as in to find

to come upon after searching, study, or effort ascertained that their old colonial-era house had once functioned as a tavern

Synonyms & Similar Words

Antonyms & Near Antonyms

Synonym Chooser

How does the verb ascertain contrast with its synonyms?

Some common synonyms of ascertain are determine, discover, learn, and unearth. While all these words mean "to find out what one did not previously know," ascertain implies effort to find the facts or the truth proceeding from awareness of ignorance or uncertainty.

attempts to ascertain the population of the region

When is determine a more appropriate choice than ascertain?

The meanings of determine and ascertain largely overlap; however, determine emphasizes the intent to establish the facts definitely or precisely.

unable to determine the origin of the word

When would discover be a good substitute for ascertain?

While in some cases nearly identical to ascertain, discover may apply to something requiring exploration or investigation or to a chance encounter.

discovered the source of the river

In what contexts can learn take the place of ascertain?

The words learn and ascertain can be used in similar contexts, but learn may imply acquiring knowledge with little effort or conscious intention (as by simply being told) or it may imply study and practice.

I learned her name only today

learning Greek

When can unearth be used instead of ascertain?

The words unearth and ascertain are synonyms, but do differ in nuance. Specifically, unearth implies bringing to light something forgotten or hidden.

unearth old records

Example Sentences

Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.

Recent Examples of ascertain Deierlein says that these measures are needed in the short term—at least until the cause of the damage can be ascertained. — Adam Kovac, Scientific American, 7 July 2026 Who had what — or more specifically, half of what — must be ascertained before figuring in tax and tip. — Inga, San Diego Union-Tribune, 15 June 2026 One person was killed by a car bomb in Moscow's eastern suburbs early on Tuesday, the Investigative Committee of the Russian Federation announced in a statement, with an investigation now underway to ascertain the details of the incident. — David Brennan, ABC News, 9 June 2026 Screening can begin in primary care with shoes-off exams, when damage from diabetes could be visible; ankle measurements to ascertain swelling, or ultrasounds if warranted. — Elizabeth Cooney, STAT, 8 June 2026 See All Example Sentences for ascertain

Recent Examples of Synonyms for ascertain

Verb

Expect to discover many novel flavors of Brazil—butiá, cajú, cumaru—worked into the menu in unique ways.

— Condé Nast, Condé Nast Traveler, 28 Aug. 2026
Detectives believe 44-year-old Lacurtis Knight, from Tamarac, was hit Sunday by the car somewhere else, and then moved by someone to where his body was discovered, according to the Broward Sheriff’s Office.

— David Goodhue August 28, Miami Herald, 28 Aug. 2026

Definition of discover

Verb

Much of that is because of Bowers, arguably the most talented tight end league-wide, but also because Mayer has found success in Kubiak’s heavy sets, and Thomas continues to provide value as a blocker.

— Sam Warren, New York Times, 31 Aug. 2026
Red walls, heavy draperies with swags and fringe, and jacquard fabrics with gold accents could be found in many homes.

— Kristina McGuirk, Better Homes & Gardens, 30 Aug. 2026

Definition of find

Verb

Consequently, investors are shifting focus from the entities funding the infrastructure to those collecting the revenue, favoring AI infrastructure providers that can realize order books and revenue streams sooner.

— , CNBC, 28 Aug. 2026
That might also explain the movie’s attempts to supercharge its few action sequences, as if the filmmakers realized belatedly that a sad book without much incident wasn’t exactly prime summer studio release fodder.

— Bilge Ebiri, Vulture, 27 Aug. 2026

Definition of realize

Verb

The sixth-year forward is an athletic rebounder and has learned to fill the gaps created by defenses focusing on Wilson in the frontcourt.

— Sabreena Merchant, New York Times, 28 Aug. 2026
From the moment Billie learns about Sophie-Rose, the teenager who inherited her legendary fake ID after it was already passed down to multiple other Gen-Z blondes, she’s obsessed.

— Ben Rosenstock, Vulture, 28 Aug. 2026

Definition of learn

Verb

Institutional investors still seem to see growth opportunities, even if some sovereign wealth funds show signs of potential pullbacks.

— Jacob Feldman, Sportico.com, 27 Aug. 2026
The expansion will see Amazon Web Services (AWS) deploy 2 million additional Nvidia graphics processing units (GPUs) in fiscal years 2027 and 2028.

— Zev Fima, CNBC, 27 Aug. 2026

Definition of see

Verb

He was located in Indiana, where he is being held pending extradiction, the release said.

— Elgin Courier-News, Chicago Tribune, 1 Sep. 2026
According to police, crews with the Westport Police Department located the vessel, a white 1998 Seamaster, and found that it was submerged.

— Justin Muszynski, Hartford Courant, 31 Aug. 2026

Definition of locate

Verb

Havard declined to comment on reports that Jimmy Carr is being lined up as the motoring show’s new host, but Deadline hears talks are underway with the comedian.

— Jake Kanter, Deadline, 27 Aug. 2026
The court also heard testimony from Christine Reglin, a special agent with the Kansas Bureau of Investigation, who maintained that the agency didn’t think Fatherley’s actions that night constituted a crime.

— Sofi Zeman August 25, Kansas City Star, 26 Aug. 2026

Definition of hear

Verb

The scientists now plan to collaborate with cement industry stakeholders to determine if the technology can be scaled for mass production.

— Georgina Jedikovska, Interesting Engineering, 27 Aug. 2026
The panel will investigate the cause of the fire and its spread, determine whether adequate fire-safety measures were in place and evaluate the emergency response, a government notification said.

— CBS News, CBS News, 26 Aug. 2026

Definition of determine

Browse Nearby Words

ascents

ascertain

ascertained

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Style

“Ascertain.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/ascertain. Accessed 1 Sep. 2026.

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Synonyms of ascertain

verb

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